Backend / Cloud Developer

🏢 Summary: The role involves rapidly designing and delivering scalable backend services on GCP using Node.js while supporting a modern React frontend. It focuses on integrating AI/GenAI capabilities, building microservices and APIs, and optimizing data models with BigQuery for analytics and reporting. The position requires delivering secure, cloud-native solutions with CI/CD in a fast-paced environment. 🗂️ Requirements: Proven experience with Node.js and GCP services, Strong proficiency in React, Experience with AI/GenAI technologies (model APIs, inference services, RAG pipelines), Expertise in BigQuery and data modeling, Experience building and managing microservices, Experience designing and integrating APIs, Hands-on experience with CI/CD pipelines, Ability to deliver production-ready code in cloud-native environments 📃 Skills: Node.js, GCP, React, BigQuery, GenAI, RAG, Microservices, APIs, CI/CD, JavaScript, Cloud, Git 🏢 Description: Summary: This role focuses on rapidly designing and developing scalable backend services on Google Cloud Platform (GCP) while supporting a modern frontend with React, integrating AI capabilities, and ensuring optimized data models for analytics. Main Responsibilities: Rapidly design and develop scalable backend services on GCP using Node.js. Support frameworks for frontend components using React for responsive user experiences. Develop and integrate AI/GenAI capabilities (model APIs, inference services, RAG pipelines) into the platform. Design, manage, and optimize data models and analytics using BigQuery for AI and reporting use cases. Create and manage microservices (MS), APIs, and integrations across the platform. Demonstrate fast coding capabilities, delivering production-ready code with minimal iterations. Ensure secure, scalable, and cloud-native deployments using GCP services and CI/CD pipelines. Collaborate closely with architects and deployment teams to accelerate end-to-end rollout. Key Requirements: Proven experience with Node.js and GCP services. Strong proficiency in React for frontend development. Familiarity with AI/GenAI technologies (model APIs, inference services, RAG pipelines). Expertise in BigQuery and data modeling. Experience in creating and managing microservices and APIs. Solid understanding of CI/CD pipelines for deployment. Nice to Have: Knowledge of security practices in cloud environments. Familiarity with additional cloud platforms (e.g., AWS or Azure). Previous experience in a fast-paced, agile development environment. Other Details: The position is located in Dharan, Saudi Arabia, with a duration of 6 months, extendable.

🏢 Summary: Contract opportunity for a Fullstack Developer to design and deliver web applications using modern Python and JavaScript frameworks, with a focus on AI-driven solutions. The role involves building and maintaining backend services, developing responsive frontend interfaces, and deploying applications in a cloud environment. Onsite presence is required in the Greater Copenhagen Area with a hybrid setup. 🗂️ Requirements: Strong backend development experience with Python, Experience with FastAPI, SQLAlchemy, Alembic, Proficiency in JavaScript and TypeScript, Experience with React and NextJS, Experience with PostgreSQL, Knowledge of Qdrant or other vector databases, Experience with Azure cloud platform, Experience with Docker containerization, Ability to develop and maintain fullstack web applications, Availability to work onsite minimum 3 days per week 📃 Skills: Python, FastAPI, SQLAlchemy, Alembic, JavaScript, TypeScript, React, NextJS, PostgreSQL, Qdrant, Azure, Docker, LLM, LangChain, LangGraph 🏢 Description: Introduction & Summary We are seeking a highly skilled Fullstack Developer. The ideal candidate will possess extensive experience in backend and frontend development, with proficiency in Python and JavaScript frameworks. If you have a passion for developing innovative solutions and a keen interest in AI technologies. Main Responsibilities As a Fullstack Developer, you will be responsible for designing and implementing web applications and services. Your focus will be on enhancing user experiences through effective software solutions. Develop and maintain backend services using Python with FastAPI. Implement frontend solutions utilizing React / NextJS. Work with PostgreSQL (Relational) and Qdrant (Vector) databases. Utilize Azure and Docker for deploying applications. Collaborate with cross-functional teams to define, design, and ship new features. Ensure code quality and maintainability throughout the development process. Debug and optimize existing applications. Key Requirements Strong experience in backend development using Python (FastAPI, SQLAlchemy, Alembic). Proficient in frontend technologies, specifically Javascript/Typescript with React / NextJS. Experience with relational databases, particularly PostgreSQL. Knowledge of vector databases like Qdrant. Familiarity with cloud platforms such as Azure. Experience with Docker for containerization. Experience with LLM / AI technologies is a plus. Bonus: Familiarity with LangGraph / LangChain for Python. Nice to Have Previous experience with AI-driven applications. Understanding of software design patterns and best practices. Experience in agile development methodologies. Start: ASAP End: End of September 2026 Location: Greater Copenhagen Area Onsite/remote: min. 3 days onsite per week

🏢 Summary: Frontend Engineer role focused on building enterprise AI applications using Next.js, React, and TypeScript in a fully on-site Warsaw office environment. The position involves developing real-time AI interfaces, managing complex frontend state, improving performance and accessibility, and contributing to technical decisions. Candidates will work with modern AI development tools and enterprise-scale frontend systems. 🗂️ Requirements: 3–5 years of frontend engineering experience, Strong knowledge of React, Strong knowledge of TypeScript, Strong knowledge of Next.js, Experience building production Next.js applications, Understanding of SSR, SSG, and CSR, Experience with complex state management, Experience with real-time updates and optimistic UI, Experience building AI or LLM-based interfaces, Understanding of frontend performance and Core Web Vitals, Knowledge of accessibility and localization, Security-focused development approach, Experience using AI coding assistants, Good communication skills, Ability to work fully on-site in Warsaw 📃 Skills: React, TypeScript, Next.js, SSR, SSG, CSR, AI, LLM, CoreWebVitals, Localization, Accessibility, Security, GitHubCopilot, OpenAI, Claude, ReactFlow, Highcharts, RAG, MCP, DSPy, Node.js, Python 🏢 Description: Please note: This role requires working from our office in Warsaw city centre 5 days a week . This is a fully on-site position , and remote or hybrid work is not available . About us We believe that businesses are moving toward AI-powered work, and we are building a platform for this future. Many AI agents cannot handle complex business tasks. We created a platform that organizes company policies, workflows, and business knowledge into one AI data model. This helps AI agents make accurate decisions and deliver reliable results at scale. We already work with well-known enterprise customers such as Glovo, Nespresso, and HelloFresh. Our platform supports thousands of users and processes real production data. Customers trust us with important business knowledge because we provide a secure and reliable solution with SOC2, HIPAA-ready security practices, and strong integrations. Job description We are looking for a frontend engineer with several years of experience who wants to build user interfaces for enterprise AI products. You will help create applications that allow users to work with AI systems in a simple and reliable way. You will build production applications using Next.js, work with complex application state, real-time AI features, and modern frontend technologies. Over time, you will also take part in important technical decisions. The position is based in Warsaw and requires working from the office. Responsibilities Build and deliver production Next.js applications with complex state management and real-time AI features. Create user interfaces for AI-powered tools, including streaming AI responses, semantic search, knowledge graphs, and AI agents. Help improve our component library and design system to keep the UI consistent, reusable, and accessible. Develop enterprise features such as localization, accessibility, browser compatibility, and security. Monitor applications after release, improve performance, reduce bundle size, and track Core Web Vitals. Use AI tools every day to improve development speed and internal frontend workflows. Maintain high code quality through testing and code reviews. Requirements Around 3–5 years of experience as a frontend engineer. Strong knowledge of React, TypeScript, and Next.js. Experience building production Next.js applications and understanding the differences between SSR, SSG, and CSR. Good experience with state management, including real-time updates, optimistic UI, and multi-tenant applications. Experience building AI or LLM-based interfaces such as chat applications, streaming responses, or semantic search. Good understanding of frontend performance, Core Web Vitals, and user experience. A security-focused approach and knowledge of accessibility and localization. Experience using AI coding assistants as part of your daily development work. Good communication skills and the ability to explain technical decisions clearly. Nice to have Experience with React Flow, Highcharts, or other data visualization libraries. Experience building vector search, RAG, or semantic search interfaces. Knowledge of MCP, DSPy, or other modern AI frameworks. Basic understanding of Node.js or Python backend development. Contributions to design systems or open-source UI libraries. What we offer B2B contract and company stock options. MacBook Pro. Modern technology stack and the opportunity to contribute to open-source projects. An AI-focused development environment with tools such as Claude Code, OpenAI Codex, and GitHub Copilot. Our values Our leadership team has strong experience in AI, knowledge management, and enterprise SaaS. We have received more than $60 million in funding and have been recognized by Gartner as a Cool Vendor. Our work is guided by these values: Quality – We care about excellent work and high standards in everything we build. Momentum – We take initiative, share ideas, and keep moving forward. Accountability – We take responsibility for our work and give honest, respectful feedback. Hard work – We believe success comes from teamwork, dedication, and consistent effort. Learning agility – We stay curious, learn from mistakes, and continue improving. Adapt and thrive – We welcome change and see challenges as opportunities to grow. Win together – We work as one team, communicate openly, and support our shared goals.

🏢 Summary: Senior Software Engineer role focused on building scalable front-end and cloud-native applications, with flexibility for deep specialization in modern front-end technologies or AWS cloud engineering. The position involves designing serverless architectures, integrating APIs, managing databases, and implementing CI/CD pipelines in a collaborative environment. Regular on-site presence and strong English communication skills are required. 🗂️ Requirements: Minimum 8 years of commercial software development experience, Strong expertise in front-end development with component-based frameworks or AWS cloud engineering, Hands-on experience designing and delivering cloud-native applications, Experience with serverless architectures, Solid understanding of API design principles and distributed systems, Experience with CI/CD pipelines and deployment automation, Ability to communicate fluently in English, Availability for regular on-site work 📃 Skills: JavaScript, TypeScript, AWS, Serverless, REST, SQL, NoSQL, CI/CD, Docker, Kubernetes 🏢 Description: We are looking for a highly experienced Software Engineer with strong expertise in modern front-end technologies and cloud-based solutions. In this role, you will be responsible for designing and delivering scalable, high-quality applications in a highly collaborative and fast-paced environment. The position requires regular on-site presence and the ability to communicate effectively in English with both technical and non-technical stakeholders. Depending on your strengths, we welcome candidates with either deep front-end specialization or strong hands-on experience in cloud engineering, ideally combining both. Your tasks Develop and maintain applications using modern front-end technologies and strongly typed languages Design and implement scalable cloud-based architectures, including serverless solutions Build and integrate RESTful services to support application functionality Work with both relational and non-relational databases to manage and process data effectively Create and optimize automated deployment pipelines for continuous integration and delivery Collaborate with stakeholders to translate business requirements into technical solutions Requirements Minimum 8 years of commercial experience in software development using modern programming languages Strong hands-on expertise in either front-end development (including component-based frameworks) or cloud engineering (AWS) Practical experience designing and delivering cloud-native applications, preferably in a serverless environment Solid understanding of API design principles and best practices for distributed systems Experience working with CI/CD pipelines and deployment automation tools Excellent communication skills with the ability to explain technical concepts clearly, and fluency in English What we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!

🏢 Summary: Short-term onsite assignment in Malmö focused on modernizing and migrating Java/Scala backend services and data pipelines, including JDK, Scala, and Play Framework upgrades, OAuth migration, and Spark-based data consolidation. The role involves heavy hands-on backend work, GenAI-assisted code transformation, and authentication redesign across multiple services. Ideal for engineers who can quickly adapt, work with legacy systems, and deliver production-ready upgrades within a tight timeframe. 🗂️ Requirements: Hands-on experience with production Java services, Hands-on experience with production Scala services, Familiarity with Play Framework internals, Experience with Apache Spark for data pipelines, Experience with OAuth-based authentication, Ability to upgrade and migrate legacy backend systems, Experience using GenAI tools (e.g., Claude Code) in daily development work, Availability for onsite work in Malmö, Ability to start ASAP and commit until 30th of September 📃 Skills: Java, Scala, Play, Spark, OAuth, React, TypeScript, Gradle, CI/CD, JDK, GenAI 🏢 Description: What we're looking for • Hands-on experience with production Java/Scala services • Familiarity with the Play Framework internals • Spark experience for pipeline-heavy work • Comfortable with OAuth-based authentication patterns • React/TypeScript familiarity is a plus • For DevOps-leaning candidates: experience with build systems (Gradle), scripting, and CI/CD pipelines Example of work tasks • Modernise backend services and pipelines: upgrade to latest JDK, Scala 3.x, and Play Framework 3.x • Apply GenAI tooling throughout to automate code transformations, dependency resolution, and compatibility fixes — producing reusable tools, prompts, and a documented runbook • Migrate authentication across a large number of backend services from a legacy API to an OAuth-based solution. • Replace per-unit data stores with a single versioned table: build Spark/Java batch pipelines for backfill/migration and extend Scala/Play backends As it is a short term assignment, these skills are important, as it is crucial to quick come up to speed and be open to changes in work tasks during these months: * Learning agility — Willing to pick up new technology, work with legacy code, and adapt quickly * Communication — Easy to talk to, take feedback without defensiveness. * Problem-solving clarity — Explain their thinking, ask clarifying questions * Hands-on experience using Claude Code or similar GenAI tool in day-to-day work. Start date: ASAP End date: 30th of September Location: Malmö (onsite work)

🏢 Summary: Frontend-leaning Fullstack Engineer role building high-scale SaaS systems with modern React/Next.js frontends and Node.js/NestJS backends, heavily leveraging AI tools and automation. You will design APIs, async systems, and event-driven architectures, integrate external services, and ship MVPs to production with ownership and speed. The role emphasizes AI-driven workflows, rapid experimentation, and scalable, production-ready systems. 🗂️ Requirements: 2.5+ years professional full-stack experience, Strong React.js and Next.js skills, Backend experience with Node.js (NestJS preferred), Experience integrating external APIs (auth, pagination, retries, rate limits), Hands-on experience with modern AI tools (OpenAI, Claude, Cursor), Strong SQL skills (PostgreSQL preferred), Experience with async processing, queues, background jobs, Understanding of reliable systems (error handling, retries, observability), Fluent English and Polish 📃 Skills: React, Next.js, Node.js, NestJS, SQL, PostgreSQL, REST, WebSockets, OpenAI, Claude, Cursor, LavinMQ, BullMQ, Kafka, AWS, GCP, Fly.io, DigitalOcean, BigQuery, ClickHouse, Golang, Elixir, Rust, gRPC, GitLabCI 🏢 Description: At Web Impact, we’re more than just an email marketing agency and digital solutions provider. We build cutting-edge, socially impactful products that redefine how businesses operate in the digital world. We’re looking for a frontend-leaning Fullstack Engineer who enjoys building complex systems, integrating external services, and leveraging AI tools to speed up development and automate workflows. If you’re excited about combining modern frontend development with AI-driven workflows and automation tools like Claude Code, Cursor, and LLM frameworks , this one is for you. What You’ll Do Develop and contribute to end-to-end features across SaaS products and internal tools, collaborating with senior engineers on architecture and implementation decisions. Build modern, high-performance frontends using Next.js and React.js Develop scalable backend services using Node.js / NestJS Design and integrate APIs (REST, WebSockets, external services) Build and maintain automation workflows and background jobs Work with async systems, queues, and event-driven architectures Integrate third-party services with real-world constraints (rate limits, retries, auth flows) Use AI tools to improve development speed, testing, and automation Collaborate directly with product, data, and leadership teams Build MVPs, proof-of-concepts, and new product ideas from scratch Rapidly validate business ideas through experimentation and iteration Help evolve successful prototypes into production-ready systems AI & Automation This role includes working with modern AI tooling and automation systems, with a strong focus on speed, ownership, and execution : Using tools like Claude Code, Cursor, and OpenAI SDK in daily development Building AI-driven workflows and integrations quickly and iteratively Automating repetitive processes (data handling, content, integrations) Applying LLMs in production with a pragmatic, results-first approach Taking ownership of problems - from idea to production Shipping fast, testing in real conditions, and iterating based on outcomes Being accountable for delivery - not just writing code, but making things work end-to-end Prioritizing execution over perfection - speed is key What We’re Looking For 2,5+ years of professional full-stack experience Strong frontend skills in React.js / Next.js Backend experience with Node.js (NestJS preferred) Experience integrating external APIs (auth, pagination, retries, rate limits) Hands-on experience with modern AI tools (OpenAI, Claude, Cursor, etc.) Good SQL skills (PostgreSQL preferred) Experience working with async processing, queues, and background jobs Understanding of building reliable systems (error handling, retries, observability) Strong communication skills and ability to work cross-functionally Fluent in English and Polish Nice to Have Experience with Rust (async, Tokio, Axum) Experience with Elixir (Phoenix LiveView, GenServer) Understanding of distributed systems and architectures Experience with multi-region deployments and geo-distributed infrastructure Experience building systems with high parallelism (a large number of workers processing jobs concurrently) Familiarity with distributed databases and data consistency trade-offs Experience with multi-tenancy architectures (tenant isolation, scaling strategies) Experience working with high-throughput event pipelines Our Tech Stack Frontend: Next.js, React.js Backend: Node.js, NestJS, Golang, Elixir, Rust Data: PostgreSQL, BigQuery, ClickHouse Infra: AWS, Fly.io , Google Cloud, DigitalOcean Queues & Workers: LavinMQ, BullMQ, Kafka CI/CD: GitLab CI AI/ML & Automation: Proprietary GenAI models, OpenAI, Claude, internal tooling Integrations: REST, gRPC, WebSockets, external APIs with rate limits Why Join Us? Work on high-scale SaaS systems processing hundreds of millions of events daily , with real-time pipelines and data-heavy workloads. Ownership from day one - influence architecture, technology choices, and product direction. Collaborate with world-class engineers, AI specialists, and PMs. Innovation-first culture - explore cutting-edge frameworks and architectures. Fast execution, minimal bureaucracy, no unnecessary meetings Opportunity to work with modern AI tooling in production Competitive senior-level compensation and career growth. Social impact - contribute to automation products that empower businesses and communities. Our Streamlined Hiring Process Initial call Technical deep dive with our team Decision

🏢 Summary: Contract opportunity for a Frontend / Fullstack Engineer to build and optimize public-facing web experiences with a strong focus on performance, SEO, and conversion. You will develop new pages and features using modern frontend technologies while collaborating across product, marketing, and SEO. The role also involves experimentation, CMS development, and platform improvements. 🗂️ Requirements: 4+ years of experience in modern frontend development, Strong skills in React, Strong skills in TypeScript, Strong skills in HTML, Strong skills in CSS, Experience with Next.js or similar frameworks, Solid understanding of SEO, Solid understanding of web performance, Experience with headless CMS platforms, Experience with experimentation and data-driven product development, Ability to collaborate with multiple stakeholders 📃 Skills: React, TypeScript, HTML, CSS, Next.js, SEO, CoreWebVitals, Contentful, Tailwind, GCP, Optimizely, Hotjar, Mixpanel, Smartling, Lokalise 🏢 Description: emagine is looking for a Frontend / Fullstack Engineer to join a web performance and acquisition team. Start: mid-August 2026 End: December 31, 2026 Location: Required 4 days on-site presence in Stockholm About the role You will work on public-facing web surfaces where first impressions are created. The focus is on performance, SEO, and conversion, as well as building new pages and features that drive growth. The team operates at the intersection of product, marketing, and SEO. Key responsibilities Build and improve public web pages and landing pages Work primarily with React, TypeScript, and Next.js Support and develop CMS solutions (Contentful) Ensure strong SEO, Core Web Vitals, and overall performance Drive A/B testing and CRO initiatives Support localization workflows and tooling Contribute to platform ownership and improvements Requirements 4+ years of experience in modern frontend development Strong skills in React, TypeScript, HTML, and CSS Experience with Next.js or similar frameworks Solid understanding of SEO and web performance Experience working with CMS platforms (preferably headless) Experience with experimentation and data-driven product development Strong collaboration skills across multiple stakeholders Nice to have Deep experience with Contentful Familiarity with Tailwind CSS Experience with GCP Experience with tools like Optimizely, Hotjar, Mixpanel Experience with localization tools such as Smartling or Lokalise

🏢 Summary: Full Stack Developer role focused on building and maintaining cloud-native, event-driven applications on Google Cloud Platform. The position involves developing scalable backend services with Python (FastAPI) and modern frontend applications with React and TypeScript. You will design high-performance APIs and integrate GCP services to deliver production-ready solutions. 🗂️ Requirements: Strong proficiency in Python and FastAPI, Experience with asynchronous programming, Hands-on experience with React and TypeScript, Experience with Google Cloud Platform services, Experience with event-driven architecture and Pub/Sub systems, Experience with Cloud Run, Cloud Functions, Cloud Storage, Experience with Docker and GCP-based CI/CD pipelines, Experience with relational and NoSQL databases, Knowledge of RPC-based integrations, Ability to design synchronous and asynchronous APIs, Polish language proficiency at B2 level 📃 Skills: Python, FastAPI, React, TypeScript, GCP, PubSub, CloudRun, CloudFunctions, CloudStorage, Docker, CICD, CloudSQL, Firestore, BigQuery, SQL, NoSQL, RPC, SDK 🏢 Description: We are looking for an experienced Full Stack Developer to join a team responsible for building and maintaining modern cloud-native applications based on event-driven architecture and Google Cloud Platform technologies. In this role, you will contribute to the design, development, and optimization of scalable backend services and user-facing applications. You will work closely with product, design, and platform engineering teams to deliver high-quality production-ready solutions. Key Responsibilities Design, develop, and maintain scalable web applications using Python (FastAPI) and React Build backend services leveraging Google Cloud Platform SDKs and RPC-based integrations Develop and maintain event-driven architectures using Google Cloud Pub/Sub and related messaging technologies Design and implement high-performance synchronous and asynchronous APIs Create intuitive and responsive user interfaces using React, TypeScript, and modern UI frameworks Collaborate with product, design, and platform teams to deliver new features and enhancements Participate in architecture discussions, code reviews, and technical design sessions Ensure high code quality through testing, automation, and CI/CD best practices Requirements Strong proficiency in Python, including FastAPI and asynchronous programming Experience working with Google Cloud SDKs and cloud-native development Hands-on experience with React, TypeScript, and component-based UI development Solid understanding of event-driven architectures and Pub/Sub messaging systems Experience with Google Cloud services such as Cloud Run, Pub/Sub, Cloud Functions, and Cloud Storage Familiarity with Docker and CI/CD pipelines within GCP environments Experience with relational and NoSQL databases such as Cloud SQL, Firestore, and BigQuery Strong troubleshooting, performance optimization, and observability skills Excellent communication and collaboration skills, with experience working in distributed teams Polish B2 +

🏢 Summary: Fullstack Engineer role focused on building and integrating AI-powered features using LLMs within modern web applications. The position involves designing scalable APIs, AI workflows, and hybrid solutions combining AI with business logic across frontend and backend systems. You will collaborate cross-functionally to deliver production-ready AI solutions in a cloud environment. 🗂️ Requirements: 5+ years TypeScript and Node.js experience, 2+ years React or Next.js experience, Experience with cloud platforms (preferably GCP), Experience with PostgreSQL, Experience building AI-powered applications using LLMs and APIs, Strong prompt engineering skills, Experience designing AI workflows and orchestration, Understanding of AI limitations and best practices 📃 Skills: TypeScript, Node.js, React, Next.js, GCP, PostgreSQL, LLMs, APIs, Prompting, LangChain, RAG, Embeddings, VectorDB 🏢 Description: Fullstack Engineer - Node/React/Typescript + AI Solutions We are looking for an experienced Fullstack Engineer to build AI-powered solutions and shape how AI is used across modern systems. What you’ll do: Develop AI-driven features using LLMs Integrate AI APIs into backend and frontend applications Design scalable APIs and AI workflows (prompting, orchestration, response handling) Build hybrid solutions combining AI and business logic Collaborate with Data Engineers and other teams Requirements: 5+ years with TypeScript & Node.js (APIs, integrations) 2+ years with React (or Next.js) Experience with cloud (preferably GCP) and PostgreSQL Experience building AI-powered applications (LLMs, APIs) Strong prompt engineering & AI workflow design skills Understanding of AI limitations and best practices Nice to have: RAG, embeddings, vector databases LLM frameworks (e.g. LangChain)

🏢 Summary: Senior Frontend React Developer role focused on building scalable Next.js applications that power enterprise AI interfaces, including chat, semantic search, and knowledge graph features. The position involves developing high-performance, real-time, and data-intensive user interfaces with strong emphasis on accessibility, security, and code quality. You will contribute to reusable design systems, performance optimization, and AI-assisted development in a modern tech stack. 🗂️ Requirements: 5+ years frontend development experience, 3+ years experience with React, Strong knowledge of JavaScript, Strong knowledge of TypeScript, Strong knowledge of Next.js including SSR, App Router, Server Components, Advanced TypeScript skills, Experience with modern CSS solutions (Tailwind CSS or CSS-in-JS), Experience with complex state management, Experience with real-time collaboration features, Experience building AI-related interfaces (chat, streaming, semantic search), Understanding of localization, Understanding of accessibility standards, Understanding of security standards, Experience with AI coding tools (OpenAI Codex or Claude), Upper-Intermediate (B2) English or higher 📃 Skills: React, Next.js, JavaScript, TypeScript, SSR, Tailwind, CSS-in-JS, SWR, WebSockets, ReactFlow, Highcharts, Storybook, Playwright, Node.js, Python, AWS, S3, CloudFront, Lambda, OpenAI, Claude, Codex, Copilot, Puppeteer, Cypress, Lerna, Turborepo, Nx, MCP, DSPy 🏢 Description: About Us Many companies want to use AI agents, but these tools often have problems with real business tasks. We create a platform that helps AI understand company rules, workflows, and processes, so it can give correct and reliable answers. Our technology is trusted by large international companies and works with leading AI and cloud platforms. Our goal is to help people find better answers and make better decisions with AI. Senior Frontend React Developer As a Frontend React Developer, you will build modern user interfaces that make enterprise AI easy to use and reliable. You will create Next.js applications that work with large amounts of data, real-time AI responses, and advanced business features. Your work will help thousands of users access important information quickly and confidently. What You Will Do Design and develop scalable Next.js SSR applications. Build interfaces for AI chat, semantic search, knowledge graphs, and AI builders. Create data visualizations using libraries such as React Flow and Highcharts. Develop multilingual, accessible, secure, and cross-browser compatible applications. Work with SWR for data fetching, caching, and real-time websocket updates. Build and maintain reusable UI components and a Storybook design system. Improve application performance, monitor Core Web Vitals, and write automated tests with Playwright. Use AI coding assistants to speed up development while keeping high code quality. Participate in code reviews, share knowledge, and support continuous learning within the team. Requirements At least 5 years of frontend development experience. More than 3 years of experience with React and JavaScript/TypeScript. Strong knowledge of Next.js, including SSR, App Router, and Server Components. Advanced TypeScript skills and experience with modern CSS solutions such as Tailwind CSS or CSS-in-JS. Experience building applications with complex state management, real-time collaboration, and high performance. Experience creating interfaces for AI features such as chat systems, streaming responses, or semantic search. Understanding of localization, accessibility, security standards, and writing maintainable code. Experience using AI coding tools such as OpenAI Codex or Claude. Upper-Intermediate (B2) or higher English communication skills. Nice to Have Experience with React Flow, Highcharts, or similar visualization libraries. Basic backend knowledge in Node.js or Python and experience discussing API design. Experience with vector search, RAG interfaces, or semantic search solutions. Familiarity with MCP, DSPy, or other AI frameworks. Experience with monorepo tools such as Lerna, Turborepo, or Nx. Knowledge of AWS services like S3, CloudFront, and Lambda. Experience with Playwright, Puppeteer, or Cypress. What We Offer B2B contract and company stock options. MacBook Pro for work. Modern technology stack and opportunities to contribute to open-source projects. Access to advanced AI development tools, including GitHub Copilot, Claude Code, OpenAI Codex, TypingMind, v0, MCP Servers, and credits for testing new AI technologies. Our Values We believe our success comes from the way we work together: Quality – We aim for excellent work and high standards in everything we do. Momentum – We take initiative and keep projects moving forward. Accountability – We take responsibility and give honest, respectful feedback. Hard Work – We solve difficult problems together and stay committed to our goals. Learning – We are curious, improve every day, and learn from mistakes. Adaptability – We accept change and see challenges as opportunities. Teamwork – We communicate openly, support each other, and succeed as one team.